What is the wavelength of a sound wave that travels at 340m/s and has a frequency of 710Hz

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

Aballet student who learns with the of his instructor is demonstrating learning.

Classify each possible hypothesis about a medicinal aloe vera plant as falsifiable or non-falsifiable. aloe vera gel is the best natural skin moisturizer. aloe vera gel can heal wounds by boosting cell renewal. aloe vera juice tastes better than carrot juice. drinking aloe juice can reduce the risk of lung cancer.